Sound controller



FIG. 1 is a front bottom left perspective view of a sound controller showing our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left side view thereof; and,

FIG. 7 is a right side view thereof.

The broken lines of uneven length show the boundary of the claimed design, and form no part of the claimed design. The broken lines of even length illustrate portions of the sound controller that form no part of the claimed design. 

CLAIM The ornamental design for a sound controller, as shown and described. 